Hiwatt DR103 100W - Normal preset
Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.
The Hiwatt DR103 is the most precision-built British amp of its era - hand-wired by craftsmen to military-spec tolerances, delivering staggering clean headroom and punch that few 100-watt amps can match. Its crystal clarity and articulate response made it the go-to choice for players who needed a mammoth, undistorted canvas - the perfect backdrop for effects-heavy rigs or the sheer force of full-tilt rock playing. When pushed hard it produces a smooth, tight overdrive with incredible note separation that never becomes muddy.
- Years produced: 1969–1984
- Made in: UK
- Wattage: 100W
- Channels: 2
- Preamp tubes: 4× ECC83 (12AX7), 1× ECC81 (12AT7)
- Power tubes: 4× EL34
Known for: Pete Townshend, David Gilmour, Jimmy Page, Roger Waters, Ronnie Wood.
Heard on: Comfortably Numb — Pink Floyd (1979); Baba O'Riley — The Who (1971).
Tags: british.
Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).
Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.